# How do I display the largest and smallest number using iterators?

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My code is compiling but I don't get the answer I want for the largest and smallest number.
If I type in 5 and 7, the smallest number gives me 5 twice and the largest gives me 4.9E-324.

This is my code:

/**
* Using class with iterators
*/
import java.util.ArrayList;
import java.util.Iterator;

public class Numbers {
private ArrayList<Double> numbers;

public Numbers() {
numbers = new ArrayList<Double>();

}

/**
*Add a number to the collection in a client specified position or at the
* end of the collection
*/
}

/**
* Display all numbers in the collection
*/
public void displayNumbers() {
Iterator<Double> it = numbers.iterator();
while (it.hasNext()) {
System.out.println(it.next());

}
}

/**
* Display all numbers in the collection organized in 2 categories, first
* the positive numbers, second the negative numbers
*/
public void displayNumbersInCategories() {
double number = 0;
System.out.println("Positive Numbers");

Iterator<Double> it = numbers.iterator();

while (it.hasNext())
{number = it.next();
if (number >= 0.0)
{

System.out.println(number);
}

}

System.out.println("Negative Numbers");

it = numbers.iterator();

while(it.hasNext()) {
number = it.next();
if (number < 0.0) {
System.out.println(number);
}
}
}

/**
* Display the sum of all numbers in the collection
*/
public void displaySum() {
double sum = 0.0;
Iterator<Double> it = numbers.iterator();

while (it.hasNext()) {
sum = sum + it.next();

}

System.out.println(sum);
}

/**
* Display 2 sums: the sum of all positive numbers in the collection and the
* sum of all negative numbers in the collection
*/
public void displaySumsInCategories() {
double number;
double sumPositive = 0.0;
double sumNegative = 0.0;

Iterator<Double> it = numbers.iterator();

while (it.hasNext()) {
number = it.next();
if(number>0) {
sumPositive = sumPositive + number;
} else {
sumNegative = sumNegative + number;
}
}

System.out.println("Positive Numbers: " + sumPositive);
System.out.println("Negative Numbers: " + sumNegative);
}
/**
* Display the positive average
*/

public void displayPositiveAvg() {
double sum = 0;
double number = 0;
int count = 0;
Iterator<Double> it = numbers.iterator();

while(it.hasNext())
{
number = it.next();
{
if(number > 0)
{
sum += number;
count++;
}
else{
//do nothing

}
}

System.out.println("Average is" + (sum / count));
}
}
/**
* Display the smallest number in the collection
*/

public void displaySmallestNumber()
{

Double smallest = Double.MAX_VALUE;
double number = 0;
Iterator<Double> it = numbers.iterator();

while(it.hasNext())
{
number = it.next();
{
if (number < smallest)
{
smallest = number;
}
}
System.out.println("Smallest number:" + smallest);
}
}

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Commented:
public void displaySmallestNumber()
{

Double smallest = Double.MAX_VALUE;
double number = 0;
Iterator<Double> it = numbers.iterator();

while(it.hasNext())
{
number = it.next();
{
if (number < smallest)
{
smallest = number;
}
}
System.out.println("Smallest number:" + smallest);
}

In above function, you not considering the first number,i ie, it.next() returns the next number,
Project manager

Commented:
This question has been classified as abandoned and is being closed as part of the Cleanup Program.  See my comment at the end of the question for more details.

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